Gonna be perfectly blunt -- if you're already having a hard time with the physical logistics for combat alone, then it's not going to get better as the game goes on. There will be cutscenes where you only see the top of your head during conversations. Those scenes were created with humans first and they're not always adjusted for other races (qunari get their heads lopped off in the other direction). Some romance scenes may be awkward and require a bigger suspension of disbelief on your part.
If you focus on the Carta background and the fact that the Chantry doesn't even acknowledge dwarves, it becomes more amusing to be the Herald. You're a walking blasphemy. Do you tell everyone to wise up and that the Chantry is a waste of time or do you go right ahead and pretend to be sent by Andraste and ask for some peeled grapes while they're at it?
Here's a few ideas on how to look at the classes:
1. Warrior with shield -- the dwarf has plenty of brawn and can do just fine taking the blows while the party does the damage.
2. 2H Warrior -- get a blunt weapon, break those legs and topple them over so you can stomp their faces in Walking Dead style. Yeah? Yeah!
3. Rogue -- go artificer spec. Toss out bombs, explosives, snares. You're from the Carta -- embrace the underhanded tactics! Don't feel like you have to stab anything.
And take a look at this. If there was ever a good time to be a dwarf, this is it. The farther away from the giant's crotch, the better. 
