Dear Sanjay Ji,
Getting the IEC may be simple but now exporters have a lot of records to maintain even if you don’t do exports. As for taxes, only 2% will be added your cost, & if your local company gives me a H form , even that is avoided. We have been doing this with others.
Regarding static load, This tower will weigh 25% of your existing tower as what I see in the pictures. The single cell weight will be 850kgs & the foundation frame that you fabricate there will maximum be 350kgs.
I will send you the foundation frame drawing so that you can decide if it suits your site.
Regards
Uppal