As long as he is still Muslim, he can be your Wali and you should avoid all kinds of innovation.

my family follows the deobandi and have always been following such sect as their ancestors come from India while after doing my research on deen during adolescence, i started following salafi aqueedah secretly as i found it to be most authentic.i wanted to know if one day im about to do my nikkah obviously with my wali consent, how will i proceed,any innonvation in the nikkah process?