Well, it's a new month, and a lovely May Day up here. Fantastic weather to go off for a little bash. Shame, then, I didn't get up as early as anticipated this morning and thus wasted my chance at going out for a few hours!
87015: Fair dos then re: 323s. I'd imagine it would be easy to notch up quite a few in the course of a few months like that! I'm much in the same boat though when it comes to 175s. I've done hundreds of miles on them thus far this year but I really haven't been trying! Even a simple out-and-back from Hereford to Newport can land you roughly 87 miles on 175s...
37412: FoSS rovers are not valid to Exeter (Tiverton Parkway still being the southerly limit IIRC). Besides, the one move I have planned on said rover on 23rd May involves a HST from Cheltenham to Tiverton Parkway with a nice +8 on a Voyager back up. 1522 off Cheltenham (0900 GLC - PNZ

) to Tiverton arriving 1728, 1737 back from TVP to Cheltenham arriving 1910 in time for another Voyager back down shortly after...But your point about going beyond Tiverton is a good reminder for me, since fares down there seem cheaper than I thought they'd be.
EDIT: 23rd May doesn't see a HST on 0900 GLC - PNZ. Buggers. There are a couple of HST moves on AXC I plan to do that day though.