Advice on moving forward

AJ/FormS: I can't thank you enough for the wealth of information. Same goes for everyone else on here helping me out. I have the MSD 6AL chipped at 6000 so I have been shifting somewhere between 55-5900 rpm. I did have detonation issues on pump 91 and had to bring back the timing. But before I could even do any follow up runs, the differential started to make some whining and then I punched a pushrod through the stock rocker arms at the time. Comp Pro Magnums and a new sure grip have gone in since then but I haven't made it back to test. I do a lot of freeway driving so the torque converter has to be somewhat mild for me. Luckily for me, paypal bill me later sent me an email reminding me of my credit line. So I bit the bullet and bought a turbo action 17805 tight converter. I know it is lower than ideal, but will probably stall around 3000-3200, its rated at 3800rpm. I think it should help over what I have now. I also ordered MSD pills from 6100-6900 and will put in a 6500rpm to allow for a higher 1st and 2nd shift point to see if that helps with the rpm drops in between gears. If I could swing a deal on some 3.91's, I will change them but I am pretty broke, planning a wedding and sinking all my money into that and other bills. Bill me later is amazing and also a problem lol.