MTG Salvation

I've put together a beta version of a white-control deck I'm working on, but I'm four cards over. What is the minimum land I could run on a deck like this, since most of my curve is around 2-3 mana (this is where 23 of my control cards are). Can I get away with 23 land reasonably instead of 24? Maybe even 22? Curve screenshot attached below.

You have no card draw and several 5 and 6 drops. I'd be playing 25 lands in that list, with somewhere between 5-8 utility lands. If you want to play 22 or 23 lands I'd cut all of the 5 and 6 drops.

This was years ago, but the easiest of my lists to link to http://www.mtgmintcard.com/mtg/decks/eventdecks/khans-of-tarkir-ptq-roanoke/jason-freischlag/wb-midrange

Notice I only had 2 cards over 3 mana and I also had 5 draw cards to help smooth things out. I still ran 24 lands.

How about now. I tweaked it, cutting off some of the higher mana stuff and doubling up on many of my 2 mana cards. I've gotten it down to my 61/24 ratio sweet spot I was looking for. However, if you think I can get away with cutting down one land to 23 now, I'd love to slip another spell in there. If not, I'll keep it at 24 (but just figured I'd make sure that slot isn't being wasted by land I don't really need).

Is this for competitive or casual? You're saying it's a control deck but it looks like a slower inconsistent white weenie deck instead. Even if you're on a budget there are tons of better options to be playing over most of the card choices. Death and Taxes or Soul Sisters are just better deck choices if going mono white.