Thinker ARB up front decrease the chance of roll but may increase the chance of understeer. Adjustable ARB at the back is not necessary, ask anyone with an adjustable RARB how often they adjust it. Save a few quid IMO, make sure your ball joints, bushes etc. are in good condition first, then go for, RARB non adjustable ALK Poly bush everything Any rear strut brace and C pillar bar In that order, the rest isnt a must IMO.