Bob...try it my way. One play per day...roll over the profits each day. You need only play 7 games so long as you can keep the juice at -10. You have a much larger chance of succeeding this way. Not sure anyone here has the huevos to lay the 20k plus on the last game though...BOL if you can though.
Take the Astros +145 tonight.
Sounds easy on paper but what are the odds of winning so many in a row. I've attempted that and failed.
The odds are insanely high, but better than nickel and dimeing your way there with a 400$ roll. Best odds would probably be a good 4 or 5 team parlay with some nice dogs thrown in. I have won 7 in a row quite a few times, I just rarely if ever double up and certainly wouldn't keep going after winning 4 or 5 in a row. A realistic goal would be to turn $400 into $800...but we all being realistic isn't fun...or practical. LOL