For 30$ i would recomend 0.25$ 45 or 90 man sng, although it's a bit on the risky side. Also, you can play 9man 0,5$ sngs. For 65$, you can easily play 2$ buy in cashgames.
If you are playing on ACR maniac monday $1,000 guaranteed for $0.50. Personally i'd just play 2NL HU or just jam the money into tournaments with $0.22 per $1,000 dollars guaranteed. Whatever you do don't go into a cash game with all of it.
Are you referring to MTT, Multi table SNG, or Single table SNG?
If you are a losing player $30 is not enough for any game... well $1 million is not enough either... you will run out.
I would say somewhere in to 0.50 or less range for Single table. I fell like having 50 but ins is a nice start and work until you have 100 and then move up. If you lose say $10 then move down.
With $30 I'd stay away from MTT's. if you want to have a good chance of seeing it grow. and play only the cheapest sitngos. anything below $1 dolar, but mainly would recommend to play cash games NL2. With $65 you could try your luck at 0.50 MTTs, and 1 dollar sitngos. in my opinion
In accordance with the rules of bankroll management, for $ 30 - your buy-in should be 0.2 ... $ 0.3. If the buy-in is more, then you will hardly feel comfortable, which will not lead to success.