Hey neuendri, I also live off of Barron Rd. I used to have an attic mount like you, and while I had no luck with the Houston stations, I was able to pull in KCEN at around 60-75% signal strength in the evenings. I used a Channel Master 3020 and Spartan preamp from Lowe's. Since then, I've upgraded to an external antenna and had much better luck at both Houston and KCEN. dave99ag also uses a CM 3020 in his attic and has been able to pull in Houston stations in the evening, but he has had no luck with KCEN. Attic mounts are tricky, and from my experiences and what I've heard from mwesson and dave99ag, it's seems like a lot of luck is involved from this far out.
If possible I would recommend an external antenna. I understand if you don't want a huge tower, but if you could get right above the roof-line with no obstructions, it would be far better than an attic mount. I think labmansid tried a CM UHF #bay bowtie (CM 4228?) like you mentioned and had poor results with Houston stations. He, jagouar, and I all use Televes DAT75 UHF yagis for Houston. I also have a Winegard YA1713 highband VHF for KCEN and KAMU. I also believe we all use CM7777 VHF/UHF preamps.