If the 14 and 16 are floor toms I'd go with it if I liked it.
Personally I hate 20" bass drums, especially with those large sizes I'd want a 22.
I would hold out personally.
Keep saying "NO" until the "one" comes around that defies reason.
BTW I'm not buying the sonor kit in Chicago. I just said NO! I am not worthy.
Plus you could get a Sonor Phonic kit for that price with those sizes. Those are just insane sounding, and I love Premiers. If you could find a kit in those sizes you would be EXTREMELY happy. The 9 ply shells sound great cranked for jazz too. Try to find the smaller sizes- these are heavy tubs.
Based on some inspection, it appears to be a Premier 303 Gigmaker, formerly distributed by Selmer. If I've gathered enough info from collectors, they're worth about $650 in mint condition with all original parts. This one's been through some rough times, so I won't bother with them. The configuration of Keith Moon's kit from the era is almost exactly like the one for sale at the store, only his kit was a different model:
http://www.thewho.net/whotabs/images/drums/km_1970-denmk.jpg