That's a lot of reel/money and overkill for fishing Flounder and I presume by Flounder, you mean Summer Flounder/Fluke?
I were you, I'd save some money a look into a low profile bait caster like the Daiwa Lexa HD. The HD has a stainless steel drive and pinion gear which will hold up better in saltwater. It's also over kill for Flounder but you can use it for Stripers and Blackfishing too and with the money you save, you can pair it up with a nice light composite rod.
https://daiwa.us/collections/baitcas...s/lexa-type-hd