Right now, the calendar is only open for the first week of May, but Hartford to Vegas is kind of an expensive flight - 12-13K miles each way. I do see some flights for 8800 points in February, so maybe that comes down, maybe it doesn't.
Best I'd plan for is 2X point tickets + 1 RT for cash. The point tickets will cost you the $99 annual fee + $22.40 for the 9/11 security fee. The cash fare is about $400 round trip. So you're saving nearly $700 if you can 2 tickets for points. You might want to get both credit cards - for 80K points you can surely get all 3 of you there and back for $169 credit card fees + the 9/11 fee, so about $200 total.
If you fly domestically often, you might want to look into the companion pass - there's a whole thread on that and you might be able to get 50K mile referrals for the cards required for that.