This has gone on too long. Look at the OP question as a math problem.
Twin brothers both with the same athletic ability and eye/hand coordination. They both have $400. to spend on their new hobby, pool. Brother a. Adam, takes his $400 and buys a cool LD cue. Brother b. Bob, takes $80. and buys a Players sneaky Pete, another $20. for a case and spends the remaining $300. on six hourly lessons from the local Pro who happens to specialize in stroke and SPF training.
Both brothers practice ten hours a week for the next year. Who will be the better player?
For the next year both brothers practice and play ten hours a week. At the end of that year who is the better player?
My simple contention is that Bob, if he were to gamble, would not only still be the better player but would have won enough money from Adam and their friends to both buy a super nice Mezz with LD shaft and lessons from a pro well known for position training.
No one can really tell the OP what the best course is. But maybe he should look at it as a math problem.