OK, here's the adjustment I'm going to make-- and it will be somewhat controversial, I'm sure, but feel free to shoot at the choice, it's not real money!
I'm going to close the put spread which is worth 63 cents, and roll it up to 1380-1355 which will yield a credit of $1.83 (we're assuming a midpoint fill-- highly optimistic I'm sure). We have two weeks to go, so we'll also increase the size to 7 spreads so we'll close 5 and open 7 spreads increasing our margin to 700*25 or $17,500 which will increase the risk, but not use up all our margin by any means.
This will bring in $1.23 * 500 or $615+ 1.83 *200 which is $369 for a total of $984 in additional credit. Our original credit was $1425, so our new total of credits is $2409.
We have a big problem on the call side, of course. Let's move those up, too, but maybe not the full 28 point move, while increasing our size. We'll need to close the dangerous 1455's which are only 23 points out of the money, and move the whole position up. So we'll close the 1455-1480 out at 500* $3.52, which will cost us $1760, but open a 1470-1495 with 7 spreads... this will yield 700*1.37 or $959, so the net reduction in credit on the call side is $801.
Our new position is--
1380-1355 puts *7
1470-1495 calls * 7, and our margin is now 17500
Our net credit so far is $1608. I'm neglecting slippage and commissions, which would reduce this by a fair bit.
Comments on this set of tactics??? It is probably fairly typical of a lot of intermediate traders, I would think.