I just installed the 78" bars on my Malone MicroSport trailer. I had just enough room to fit 2 Hobie Revolution 13s, 1 Hobie Outback, and 1 Hobie Pro Angler 12. They all fit like a glove. The total weight comes to just under 340lbs with the max trailer load being 355lbs.
I think it's going to haul just fine.
The Malone trailer has performed flawlessly for me and is so much more reliable than the sports trailer I purchased from a Moro bay co. that broke in half. That said the wiring needs some attention and I installed gromments at all thru frame openings. Also, installed the plastic wire loom and taped into rear lights. The cargo box is a bit flimsy but holds torqueedo controllers/chargers / kayak outerwear / water bottles ect. I made a plywood platform in front of cargo box for my stand-n fish /pontoons. I carry two revos 11 plus gear and around 330 pds. I have the upgraded wheels which have a higher load capacity but nothing is posted about increased gvwr.
Anyway ,trailer tracks perfectly and I added 78 in. bars for visibility when backing with my van. I use Malone saddles in front and marco saddles in back which allow the kayaks to slide on easily and then locked down with the Malone saddles. Absolutely, love the performance of the revo 11.