They have defensive rifle posted, I am signed up for the Feb 17-18 weekend one (let me know if you grab the last spot and you want to grab lunch or whatever). I've taken a few courses there, you can't go wrong really.
For defensive rifle, they (apparently) work on rifle to handgun transitions, so they want people comfortable safely working from and back to a holster, thus the suggestion of the Handgun 102.
From a gear perspective, I would have your kit sorted out before arriving. That is, I would recommend having used the stuff they require prior to arriving. Sling, holster, ammo pouches for both handgun and rifle, being zeroed and knowing some basic holdovers, realizing you're going to be potentially kneeling and/or dropping to your knees/face on brass on concrete. I haven't been to this course yet but based on my other courses, I would say hour 2 of a 16 hour class is not where you want to find out something you wish you had known earlier about your gear. Also, every class has people borrowing SIG equipment, and every class it is not 100% reliable, which was surprising to me. I have seen the following on borrowed gear: red dots on rifles fail, charging handles stick horribly (could be the actual action, I wasn't paying attention to the resolution on that one), multiple magazines refuse to seat in both rifles and handguns (i.e. it was the gun, not faulty mags), quick adjust slings that weren't, and I feel like there was more.
Rifle 102.5 is the shooting portion of Rifle 102, FYI. They have verbally advertised it as a way to get back into the swing of things for Defensive Rifle for someone that's been away for a while or wants a refresher.
I'm not sure if there is a chance of them using the lead-free range, but be prepared for a thousand dollar ammo bill if that happens. It seems like they switch ranges around, even last minute so, it's sort of a dice roll. It may be impossible to hold Defensive Rifle in there, not sure, but I'm preparing for a 10% probability of that happening...
The discount for signing up for another class within 15 days after completing a class (signup within 15 days, not the actual class date) is 15%. Furthermore, I found that if you sign up for two classes at once they will give you 15% off as well (from memory, there's a chance it's 10%).
What they will OK you for is really you talking to the people at the front desk and convincing them. Having never tried to talk myself into something personally, I can say that as I've progressed, the thing I notice is not the overall skill level of people, but rather that everyone is much more competent in safe gun handling. 101/102 seemed like going to a public range, 103/104 level was better. The worst offenders are the olds that are just set in their 40-50 years of doing stuff unsafely, I can't even fault them for not being able to untrain that crap in 20 minutes of classroom...
edit: let me know if you have questions about administrative crap as well. Here are some random things I thought of:
If you go during the week you can get a $12 delivered lunch, weekends this is out so bring your own (you can usually pick the instructors brain at lunch) or be prepared to eat local fast food).
I would double up on hearing protection because yeah idiots like me are bringing brakes that you will feel in your soul if you're next to me. Would recommend a pocketable notebook and writing instrument. The literature they hand out never covers the best stuff about the course, you have to remember or write it down. HG104 didn't even have a booklet...
If you're indoors be aware you're going to be standing on concrete for most of the day.
If you're the type of person who would like extra time to not be rushed and maybe even pick your instructor's brain a bit while everyone else is thumbing their ammo into magazines, having your ammo loaded up on stripper clips and bringing a striplula is amazing. ZIPZIPZIP magazine is full...
