Don't come to early, lol, our spring and your spring are way different.....a lot of Montana is getting snow today. Bear behave a bit like cattle this time of year, they look for green grass, and of course winter kills. I have seen them graze grass for quite a while.
Later is best. If you go to early you may not be able to get to your spots due to it being snowed in. Sometimes you can not get into the high country until June. It snowed the past two years on the last weekend in MAY.