10-8 to finish would get them to 45-37.
Phoenix would have to go 13-8 to match that. Utah would have to go 12-7 to match that. Portland would have to go 10-10 to match that. The Grizz have a tough close to the schedule, but keep in mind Portland has 13 games remaining against teams currently in the playoffs.
I think 10-8 would get them the 8 seed.
If they can somehow go 11-7 or 12-6, I think they can maybe push to the 7 or 6 seed.
For reference, though the Grizz have a tough schedule to finish the season, this is what they and their competition are facing in terms of games remaining against current playoff teams from the West and the current Top 6 of the East (Boston, Miami, Chicago, Orlando, Atlanta, New York):
Denver - 37-27 (9 of 18 plus 2 against Phoenix/Utah)
New Orleans - 37-28 (9 of 17 plus 4 against Phoenix/Utah)
Portland - 35-27 (13 of 20 plus 1 against Utah)
Memphis - 35-29 (10 of 18 plus 1 against Utah)
Phoenix - 32-29 (12 of 21)
Utah - 33-30 (12 of 19)
You'd have to think Portland's slate is the most difficult of those, and Phoenix and Utah are going to have a hard time making up ground. When you put their remaining schedule up against the rest, it isn't quite so bad.