I love classic minecraft and TWHL server, which is so far the best server of where I have tried to play. Now I started to play minecraft with Tekkit mod pack and I always think of how much it would be awesome to play it with a great community of TWHL. I made working client for non-premium users. https://drive.google.com/uc?id=0B_jsQo-PFXxxNlA4czMzdkNhUUE&export=download
Just extract files into %appdata% folder and make a shortcut on desktop of minecraft.exe file which is in .minecraft folder. Type any name and press play offline (You can play online). I have no hardware to run the server and I am willing that someone out here will make it. Also I am pretty sure that you won't be able to stop playing this after you try . Server files can be found here: http://www.technicpack.net/tekkit-lite Maybe you'll think that it's a bad idea, because there is already one server of TWHL community but i think it's worth a try because this mod offers absolutely different experience of minecraft compared to the classic one.