Would it be in poor taste or bad etiquette if I had 3 separate housewarming parties?

[Peachy Keen, Jelly Bean]

My boyfriend and I recently moved into a new house and I've been working on getting it presentable enough to throw a housewarming party. His step-mother has offered to throw us one around April. Now, I know the owners are the ones who are supposed to throw the party, but I don't want to hurt her feelings by telling her it wouldn't be proper if she threw it (plus, we both love throwing parties and I know she's excited to do it).
When I was trying to think of a solution to this, I wondered if it would be possible to throw 3 separate parties: one that bf's step-mom throws for his family, one that I throw for my family, and another for some people that I used to work with who I'm still friends with (that last one would be more of a housewarming/girls' night). Would this be acceptable, or should I only throw one party? Another reason I'm asking is because we know a lot of people and both of our families are pretty big. Although our house isn't what one would consider small, it certainly isn’t large enough to accompany every single person we know at one time. Having an open house wouldn’t work either because he’s on a funky work schedule and we’re having to plan around that.

Thanks for the help!

[Jukebox122]

I think this is totally fine as long as you don't invite the same people to all parties. Plus, your reason is a very good one, your house isn't large enough to hold everyone in it all at one time. Have fun!

[? Mad Luv ?]

i don't see anything wrong with it! just call it something different!

See i don't want my work peeps to hang out with my friends! they don't need to know my personal things!
but my friends can hang out iwth family!