Most jurisdictions have limits on the number of Limited Partners, and they also have accreditation standards for investing LPs. As a rule of thumb, you don't want a lot of LPs to manage, so you want to try and limit the number to 50, maybe 75. Now, you may want some strategic investors at the $50K level, so you make the first close minimum $50K, let in a few strategic LPs, and then raise the minimum to $100K or $250K.