The reason I am so adiment about you not needing a track is that all it is going to do is mask other issues that could be a safety concern when driving on the road. Especially if it is serious enough to cause a loss of control while you or a family member is cruising down highway.
Make sure that everything is tight up front, like the steering gear box you mentioned. Not to sound like I am preaching, but just because your redoing it after this summer shouldnt mean you can overlook or bandaid problems that you have now.
I just dont want to read a sad story about tomCJ7 or his family in the pub.
Wishing you a safe journey,