Hi Ricky,
I’m sure that there will be far more knowledgable people than I along soon to help you out, but for my two penneth worth….
I checked the valve clearances on my 2nd Gen1 some years back, as like you, I didn’t have the funds to pay a dealer to do them. General feedback then was that the dealers mostly know that with this model, they were most likely to still be well within tolerance and would quite likely still charge for the job, but not actually check them.
When I did check them, out of piece of mind really, they were indeed all within tolerance at the time.
If you do some searching on here, you will probably find (as I did) that the general consensus here is that they don’t need doing / are unlikely to be out of tolerance at this sort of mileage.
With regards to the AIS removal,I personally wouldn’t bother, until such time as you do decide to get the valve clearances checked. At that point, you’ve got to remove it partially to check the clearances, so you might as well fit the AIS removal kit then.
Personally, if the bike is sound and running well atm, with funds being tight, I’d spent the cash on a decent home service. You could then spend the extra cash on some worthwhile improvements if needed. Hope this helps.