Unlike some of the people on here, I commend you OP for being so persistent despite your disadvantage. Why play another class/job if you enjoy playing Monk?
As for how to maximise your DPS, I think the foot pedal mentioned by Fiosha might be a good idea. It will let you customise the pedals to whatever you need to make multiple hotbars accessible and also allow you to move more effectively. Bixby's suggestions have also been very good.
In terms of macroing skills, yes, it may hurt your potential maximum DPS, but macroing off-global-cooldown abilities to certain skills won't be too much of a reduction, as you would normally be weaving these in between your combos once they are off cooldown anyway. It may lower your potential BURST DPS, like for certain burst phases you might usually sit on and save Steel Peak, Howling Fist and Mercy Stroke, but if these are macro'd to combo skills, you will use them straight after performing the ability they are macro'd to, and since they aren't positional, you will probably use them when positioning for your next move in your combo.
While I was getting to grips with playing Monk, I had Mercy Stroke macro'd to Bootshine and Dragon Kick, so that I would automatically use it once a mob got to less than 20% HP following one of those two attacks.
A simple macro like the one below will work for this:
/macroicon "Dragon Kick"
/action "Dragon Kick" <t>
/wait 1
/action "Mercy Stroke" <t>
You can macro Steel Peak and Howling Fist to other skills in the same way.
Lewena's suggestion with macroing Blood For Blood and Internal Release might also work, as you would reduce the number of button inputs. Yes you will reduce your DPS by holding off on using Internal Release until Blood For Blood is ready, but it may help reduce the number of button inputs you need to worry about.
/macroicon "Blood For Blood"
/action "Blood For Blood" <me>
/wait 1
/action "Internal Release" <me>
I hope you manage to keep it up and that you stick with playing the class that you enjoy. Good luck!