OK, a lot depends on share count, cash reserves, distance to the long and broker rules, but essentially you're forming a calendar/diagonal spread, like 120 wide, so you need some margin to be able to do that... but let's say you have 10000 TSLA, then they'd be underwriting the weekly sell, so margin is required, but the long +c300 calls are still there to limit an upside loss
So yes, see it like writing -c185/+c300 weekly, except if you get caught in a move upwards it's way easier to roll
The risk is that the SP dumps and you end up so far from the long leg that you can write anything, although I suppose you can move down to 25cent premiums, in fact over a year, not including broker fees, 20c per week will get the initial premium back. So make $$$ when the opportunity is there and pennies when it's not, no need to take risk...
For my part I with these "burner calls" I will do an initial ATM sell to claw back a decent amount of the premium. If you buy the longs for $10 and already take back $5 on the first sell, then you've recuperate half the initial cost and can relax a bit on future short sells
I've been doing this for a while now, trying to get a feel for it. Seems the best approach is to sell a little more aggressively against half the positions, so 50x $2 if you have the 100x +c300, then you need half the margin and can either double-up the contracts to row, or roll up and our on the losing positions, but still have 50x free to write the next week
The ideal is to keep it fairly OTM, then if the longs go into profit you can easily get out of the shorts and sell off the position for more profits
Anyway, not advice, of course!