With a macerator pump, RV-specific toilet paper is not necessary. The macerator grinds paper with waste. Single-ply or septic-safe regular toilet paper works well - Scott 1000 is the most recommended. Avoid ultra-plush multi-ply and wet wipes.
Sewer hose without fittings is rare - buy cheap complete kit and swap fittings, or try industrial bulk hose. Consider repairing leak with hose clamp or sewer hose repair tape.
Thor Ace has both macerator and gravity dump. Look for valves in the wet bay that direct flow to one or the other. Close the valve to the outlet you are not using. Some setups have both connected - gravity works by default, macerator works when pump is on.
Everything you need to know about RV plumbing systems from fresh water supply to waste management.