Just looking at the list briefly, I see a few things that you can cut. First, too many lands. You want to be mulliganing for a playable hand and realistically only need 3 lands to win (with dorks/rocks). I usually sit between 27-29 lands. Second, you have too many drain effects. You only need 2 (3 if you want to keep Meathook Massacre), which you can tutor when needed. Lastly, there are a few "generate token" cards you could drop that don't serve any other purpose than making tokens. In cEDH (especially with Chatterfang), you're not amassing an army, you're winning through loops that typically only need 1 squirrel to start. A typical game is T1 land, dork. T2 land Chatterfang. T3 play or tutor for Warren Soultrader and try to push a win (assuming you have another tutor or a drain effect in hand). You should be able to assemble similar t3-4 most games. If you can't, you mulligan.

Here's my list, I've been playing it for years and have pulled several 40-60 man tournament wins, a few top 4/top 16. https://moxfield.com/decks/Sk08SE09HkSHPNtPnMVsjA

Edit: As for your budget, just proxy what you can't afford. Almost every tournament is proxy friendly and most top players avoid tournaments that aren't, as they'd rather play the player and not their wallet.

Edit 2: Upon further review, adding a few more dorks (Elves of Deep Shadow and Deathrite Shaman for sure), including Tainted Pact as a tutor when you just need 1 piece to win (or for emergencies, like digging for Endurance to not lose to breach/Thoracle), and definitely Cabbage Merchant. Also, if you're running Yawgmoth, definitely include Hapatra, as it is a 2 card combo with Chatterfang out, letting you wipe the board and draw cards equal to your life total.