There is nothing wrong with E fiberglass. Fiberglass fibers are actually much stronger in compression than aramid fibers of the same thickness and they incorporate in resin better.
S fiberglass is roughly 20% stronger than E 'glass but you can make up for that by adding an extra layer of E 'glass if you are concerned about it. S 'glass also has somewhat better abrasion resistance but that should not be a factor in your repair if you can do it from the interior of the hull. If you have to patch the hull from the exterior, fiberglass would be preferable to aramid.
Fiberglass is really pretty amazing stuff with an excellent balance of strength in tension, strength in compression, and bond strength to vinylester and epoxy resins. The only real advantage aramid has over it is a higher strength to weight ratio in tensile strength only. Since you are probably not going to be applying that much weight in terms of fabric, the difference in weight would be trivial.