Need a new Torque Converter... Suggestions?

What you're looking at is normal wear and tear on the hub. Nothing unusual about that after 10 years of use. You'll need to replace the front pump seal, and the front pump bushing.
Changing to a lower stall speed can/will effect the way your car performs. Converters built higher than 2800 rpm are usually custom built to match what has been done performance wise to the engine. High stall converters are loose below their rated stall speed, hence they will feel sluggish until they get past their rated stall speed. You can order what is called a "tight" high stall converter, but the converter builder will ask you a lot of questions about the engine you might not have the answers for.
If it was me, I might ask them what can be done to the converter you now have. The hub will be replaced for sure and they may be able to adjust the stall somewhat to get you that "tight" converter. Getting a "quality" converter for in the $300.00 range is going to be difficult. With converters, having seen the insides of many brands, you get exactly what you pay for.
Your converter appears to have an anti-ballooning plate, and externally looks like a well made piece.
I'd contact Lenny and ask what he thinks.