I want to throw my 2 cents in here in case you missed
my experience of the same
I did the exact same thing for the same reasons as sack up. I was underrolled for the move. I had decided to take 150BB to the game and go for it. After my 75BB 1st day, I thought I was set. Then, I proceeded to go on the largest and quickest downswing of my career. Very unfortunate and ridiculous consecutive suckouts. AA 10 times which were capped and more than 4 handed 7 times. I won none of those seven hands. After that, I moved back down.
I'm confident I can beat that level. I was playing about 4 tables on average, but never more than 7. I was about 17/11, but I think I could have trimmed that up some to make for less variance when starting. Inside the Poker mind has some nice thoughts on moving into mid limits that I think is pretty good advice. And, FWIW, I'm quite certain my winrate would NOT be 2.0 at 15/30. Given the players I saw there, I was thinking I could win somewhere in the mid 1s...maybe 1.2-1.7. And yes, given the aggressive nature of the opponents, I would imagine that the SD would increase. It seems the TAGS are better TAGS, and the fish are people that are just there to gamble, but have a good feel for when to bluff raise and so forth...the 38/18/2 types.
My personal decision now is that I will no longer move to a level where I can't lose 300BB and continue playing. This way I'm not subject to the cruel timing of the poker gods.
On a side note, I'm at 5/10 right now working my way back up there. Really the 5/10 game is filling up more. There generally seem to be over 20 tables available at party with plenty of fish.
So, that's where I'm at with that. Of course, you do want you want, but I'm not going back to 15/30 until I can light $9k on fire and keep playing my game there.
Good luck to you whatever your decision.