First, good news, we are not losing our draft pick this year. Even going 4-1 we cannot be better than 9th spot which means that two teams have to jump over us to lose the pick. Chances of that are less than 0.3%.
Second, bad news, yes this win does suck from the lottery perspective.
Who wants to enjoy short term satisfaction of the win, power to you.
The price is that we are solidly at the 8th spot with one win against Mavs away from having a very good shot at the 9th slot in the draft.
With a win against the Mavs, we would have a winning record against both, Mavs and TWolves.
We also have the easiest schedule the rest of the way.
Wolves do not have to tank to go 1- 6 (Portland twice, GSW, Utah, OKC, Rockets, Lakers).
Mavs have easier schedule (Bucks, Kings, Clippers, Spurs, Suns, Denver and Memphis), but mostly away games. If they lose to us they are looking at 1-3 wins range.
We have the easiest games (Mavs, Lakers, Houston, Suns, Clippers). Win over Mavs gets us to 3 wins.