High test with high deca you will be a walling pharmacy. It would be better imo to swap deca for equipoise and if you still like deca add a small dose of it.
I thinks this would be a "heavy" cycle in terms of side effects especially water retention BP issues , endurance would go to shit.
Deca imo is better suited for building your base , but now you have a very good base so if I was you I would use equipoise instead and maybe increase the testo.
For GH I won't comment I know this dosages are kind of normal at your level of development but still! I would at least start with 1 vial a day 15iu GH is more than enough
My cycle would look like this
2g test mix esters
1.5-2g equipoise
15iu a day GH
Slin dosages are very individual and it goes jand to hand with your nutrition. I would definitely add some trenbolone and masteron and I would drop Lantus at least for the moment.
All this test deca slin GH dbol all comes with water retention you will be out of breath and with high BP very easily.
Imo you need to reconsider your stack your compound choices. And probably I would add t3/t4 into the mix