Risk of Ruin on a Small Bankroll

I've been practicing my counting for a few months now, and I'm finally confident that I've got the skills to do it for real. The only casinos within a reasonable distance are in AC, which means that I'm going to have to play with a $10 unit in 6/8 deck games with penetration that's usually around 75%. At this point, I can't really afford to lose more than $3-500 in a single trip and still come home smiling (I'm doing this for fun, not income-- in case the size of my bankroll didn't tip you off). What are my chances of doubling up before tapping out, and how many hands can I expect to get in? CVCX is giving me a 67% risk of ruin with a bankroll of $300, Blackjack Audit is putting it at around 45% (with essentially a zero chance of making it past 100 hands). On the other hand, Million Dollar Blackjack makes it look like a bankroll of around 70 units (not much more than I'm working with) will give me a 10% ROR at a 1% advantage. What are my chances of coming home happy, and where can I go to find a good explanation of risk of ruin? Thanks!

spreading $10-$80 and aggressively wonging (playing only positive counts) bringing $500 on a trip playing 8 deck games with 2 cutoff (75%) you can expect to win $7.80 per 100 rounds observed with an N0 of about 36,000 rounds (terrible game). You'd need about a 450 unit bankroll for a 5% longterm risk of ruin ($45,000). For a $500 trip bank and assuming you'll play 8 hours per trip expect to go bust one trip in 5.

Well, I'm pretty much just in this for cheap thrills, so I'm willing to settle for an EV that'll just barely pay for tokes, train fare and a little bit of craps on my way out the door! I'm expecting to spread more than 8 to 1-- how will that effect my EV and risk of ruin? Also, I assume that the 80% chance of not busting after 800 hands includes a lot of trips that will be losses, but not total losses-- how much of the time can I expect to come home a winner?

Also, where is the best place to go to find an approachable explanation of the math behind all of this for a reasonably bright layman? "Blackjack Attack", maybe? Thank you!