As with many things, the answer is...it depends.
- What gauge is your gut?
- What surface will be playing on? Clay or hard courts?
- What is your playing style? Heavy topspin from baseline or varying spins & slices?
- Do you normally break strings?
- How much do you plan on playing?
Normally here in VA, I can get 4-5 matches out of my gut/poly hybrid during the summer clay season (4.5 level player, predominately baseline). But the last few times I've visited Florida, the string popped after 2-3 matches on clay.
Hard courts, I don't think you will have any issues, but again, it depends on how much you plan to play.
"Nobody beats Vitas Gerulaitis 17 times in a row" -- Vitas Gerulaitis, after beating Jimmy Connors on his 17th try.