I used Aromage Ra and beat both lv 30 and 40. I've only lost like 3 times due to bricks. Basically...
3 x Aromage Rosemary
3 x Aromage Jasmine
1 x Winged Dragon of Ra
1 x Botanical Lion (beater mainly)
1 x Crystal Seer
1 x Unhappy Girl
1 x White Magician Pikeru
1 x Cure Mermaid
3 x Aroma Garden
1 x Wall of Disruption
1 x Draining Shield
1 x Gift of the Mystical Elf
1 x Windstorm of Etaqua
1 x Astral Barrier
1 x Spirit Barrier
I made this deck since the first Jack event and changed nothing and already have everything. I use Jasmine because I don't like the stall and wait for LP to summon Ra (and I don't have 3 Unhappy Girls or more copies of Draining). Also Rosemary helps switch his monsters position and gets rid of RDA easy with Aroma Garden.
Even in Turbo Duels I have no problems. Lv. 60 Jack does give problems though with his lv 7 Synchro. It has bricked but most times I get to do the right amount of stuff. Astral and Spirit are just for lockdown and lp gain with Cure Mermaid and Pikeru.
I just find Gift of the Mystical Elf more flexible than other LP gain trap cards. I can activate it in my turn, in the battle phase, anytime no condition compared to stuff like draining shield (which I only have 1 copy of).