Looking for a spare spool for a TDA 150P

First off, forgive me Shimano Posse, for I have sinned.  I bought my first non Shimano reel in quite a few years.  After switching over all my old Curados to the newer 100 size ones and a Scorpion MG, my 200B5 I had left for cranking felt awkward.  I wanted to stay with Shimano, but they don't offer a lower gear ratio 100 size reel in the under $150 range.  I would have to go up to a Chronarch and I just can't justify spending that kind of $$$ on a technique specific reel at the moment.

So I did some research and I settled on a Team Daiwa Advantage 150P.  So far so good.  The only problem I see is the line capacity.  If I load it up with 10 lbs line, it will hold probably close to 200 yards .  I don't need that and that's wasting a lot of line when at the most I will only use the first 75 yards or so.  I know I could use some backing, but I just don't like that much line on there period.  I see the Super tuned version has a bit shallower spool and it will probably hold somewhere around 150 yards.  That's getting a little better.  Is that compatible??  Any other shallower aftermarket spools that will fit it that don't cost an arm and a leg??

Thanks