With a rank of  41200 at WBJEE, taking Techno Main Electrical is most appropriate option as it's a direct admission through counseling, while direct admission to CSE at Techno Main or IEM might not be possible or it can come with higher costs. Prioritize getting a confirmed seat through your rank through the standard WBJEE counseling process, as CSE admissions are highly competitive, expensive and typically requires a better rank. You can explore direct admission to CSE in a higher-ranked college if available, but if limited to these options, the confirmed seat in Electrical at Techno Main is a better choice than a unavailable or very expensive direct CSE admission.