I don't have much info on 149 or screenshot of seals since I skipped that one :/ sorry, but my reason for posting... is that you'd be stronger with a 145 than a 149.
I used the 145 b6 with attack seals and -10 -- screenshot
. 149+ weps don't give promised power.
My 157 axe has 2700 more total attack than my 145-10. When I equip it, I only have 1700 more attack...
Same thing with armors... the 136 set is the best for a while. My 155 set is missing 1k def and you don't get the mag def bonus at +15.
Sooo... I can show you 145, 157, and 165 seals, but not 149! sorry