Moving him to OPP with occassional participation in reception may alleviate the pain that there're no good receivers among Bulgaria's new generation.
Alexander Kander (2005) was the best OH at the last ECH U18 and Hristo Hristov (2006) is the best player in 2006 generation in Italy, he plays for Treviso, but he's Bulgarian, and both seem to be rather above-average talented technique-wise. Obviously, it's a long-term perspective, no one knows how they'll improve, but it's not like Bulgaria will be relevant as a NT anytime soon.
I don't think Nikolov will be moved to opposite position as long as there's Sokolov in NT, and I don't think he'll play in Civitanova-like system that much longer since there are well-confirmed rumors that Lagumdzija will join Civitanova the next year.