I recently took 4 100BB BI's at my level and ground it up into ~11 BI's in a short period of time.

In my last three sessions, i've run like dog****, getting it in with 40% equity a few times and losing, but i've also gotten it in 8 times good.

7 of these times i was at least 76% favourite, and one of the times i was a 57% favourite, and i lost every. single. time. I guess variance is just a bitch and i'm probably just unlucky.

Anyway my question related to buy in amount. As everyone buys in deep (250bb average), the preflop action will go one of two ways:

There will be a raise to 6BB-12BB, and will go to the flop maybe 3-6way. Or, there will be limp limp limp raise to like 20BB.

My problem is, with buying in at only 100bb, i'm unsure how to play many marginal hands. I can't look to see a flop with marginal hands cause it's too big a percentage of my stack, but shoving pre is only getting called by hands which have decent equity against me and increases variance.

So would it be better to play how i used to play online whilst being properly rolled for the level? Online at 100bb i'm comfortable with 15-20 BI's, but would i need to have this amount of BI's for the deep amount? Then i would be able to raise to a 'standard' amount in the game to thin the field. The way i'm thinking about it is this:

Online, i used to raise to 4x pre, with 100BB deep and i had decent success. So in this game i suppose a standard raise amount to thin out the field when deep would be like ~20-22bb, would this be too much of my stack to put in knowing a cbet is probably getting called?

Because i'm starting to think my strategy of buying in shallow in terms of the game is a losing one, cause when i do get it in good and win i'm only winning a tiny proportion of someone's stack and therefore they're making smaller mistakes against me. Any thoughts about buying in for 50bb and just limp/shoving or open shoving after raises with premiums?

So let's say the deep buy in amount is $150, should i be playing with maybe a $3k bankroll to be able to play my best game and take advantage of the implied odds? I've gone pretty much busto now, and although i have a lot of money invested and in savings accounts, i didn't really want to dip into that, although if i could use it to ride out variance, make a profit and then put it back that would be a go-er.

Any thoughts would be appreciated. Thanks.

I'm assuming you're referring to playing 1/2 or 1/3, and no bigger than 2/5. That being the case, 20BI's is plenty. Personally I never understood the "thinning the field" mentality when raising PF. Yes, ideally you'd like to get it HU every time against villains whose ranges are so predictable they may as well turn their cards face up. Is that realistic? Hell no. But in my opinion, that doesn't mean that you need to make your PFR's 15-20bb's. If you're playing at a loose table where everyone has the "anything can happen after the flop" mind set, then go with it, but keep the pots small in the meantime (unless you have QQ+ ldo.... Then I personally would make it as big as you think 1 or 2 people might call). As long as your opponents are calling with weak holdings, they will eventually go broke. Increasing your PFR size is just increasing variance at LLSNL IMO, and as long as you have a somewhat solid grasp on basic fundamentals, you don't need to play that way to be successful.