Hi, I have a part which is "d" shaped with flanges on the edges and surface about 1.5 m2.
I am willing to use Lantor Soric XF as a core for my infusion and I know that infusion mesh could be avoided.
I will be more comfortable with the standard process (peelply, infusion mesh, bag).
Will it hurt in any way if I will infuse with the standard stack?

No not at all, in fact really it is better - Soric and other internal flow medias flow quite slowly in comparison to regular flow mesh, and depending on your layup they can make pinholes more likely.

The downside is that you use a lot more resin.