Hey.
Seems you are stressing too much about this topic. Yeah, there will be much tougher opponents and more difficult situations. Worst thing you will make is that you are going to change your game. The most important thing is to take the stress out of moving up stakes.
My personal advice is that, first of all, if you don't do this already, change settings to show chips as BB. This is for both avoiding confusion, and you are not that much emotionally attached playing with "money". For me, playing with BB's is mostly part of mental game strategy. It is less painful lose BB's than actual money.
Now, add only ONE NL10 table. The rest of the tables are NL5. Play week or two, and if it's going well, add another (that's why you must play with chips showing as BB, you don't even remember which tables are NL10 and which NL5. By that you make sure you are not going to change your game style too much). Do the same until all of your tables are NL10. Don't take huge leaps, poker is not going anywhere.