Glad to hear you are enjoying the bike. For me personally it's way too slow for anything outside of Bangkok. For the highways I want a bike where I can safely keep ahead of traffic without cars/trucks overtaking me. For Northern mountain loops, I prefer a lighteweight +450cc supermoto (KTM 690 currently) with some sticky tyres, heaps of low end torque and proper engine braking. Anyways, I'm sure you can have fun on the ADV150 too it handles great indeed and is very comfortable too.
Best way to avoid the delivery riders in Bangkok is to ride faster than them safe rides!