Adjustable....i will avoid this one. Most people just buy whatever set there is on the shop shelf. Most of the time the spring rate is 6k front and 4k rear. I rode in a friend 1.6 wira with hilo HWL 6k/4k and its not the sort of car that i can live with on daily basis.
I strongly suggest u install some strut bars first. Bars will make your ride handles a lot better even on stock suspension. My recommendation is to get front strut bar, front lower bar and rear arb(16mm is enough) Its night and day different. Bars are install and forget item. If u got extra then u can go for cabin bar. Then only u work on the suspension. Having a very firm suspension and very flexible car is not a good combo as handling can become unpredictable at the edge or when cornering at uneven road if u decide to push it.
Strut bar is also inside my plan
Rear anti roll bar & rear strut since the car have front strut bar already.
Absorbe if I am not going to adjustable I wilk go back to Kyb excel G since they are pretty nice cheap absorber. Use it on my myvi before really satisfy.
Another thing is Wira stock height very low? Mine front 2 finger rear 3 1/2 finger although didn't affect my daily but I feel quite low. I see my neighbors wira also not so low. Btw this wira is still in stock absorber & spring I wonder is it worn out already.