Having a massive -EV bet and "buying it back" with another -EV bet is.... well let me just say I bet books love you.
I put in Rays at -140 for 40$ to win 30$ if I bought it back +115 for 30$ it would pay 34$ and I'd lose a total of 6$ instead of risking my original bet amount and possibly losing.
So your initial bet has a -6.68718% expected value and you plan on buying it back with a wager of -2.02983% expected value.
This is assuming a +119/-120 probability (Matchbook odds), your calculations are the same right? I mean, you've been gambling for years, surely you know how to calculate basic expected value?