Wow, this is a pretty decent account. I'd say 10-15m 07 gp, up to 25 if you'd get the strength to about 90 and the range to about 65
EDIT: Just viewed your thread, somebody offered 20m 07gp? You better take that, make sure you get a middleman! (P.s. I'm trying to become an OMM, if you'd like to go through me I'd love to help)
When I sold my obby mauler : 63 range, 70 str (i believe), all lvl 1 and I had 4 offers 8-12M in like one day. I sold it after one day.. But I know that if you wait longer, better chance to get a better offer like 15M to even 18M. HOWEVER, it will be harder for you since youre not considered trusted. Id say u can get 6-9m offers.