Though retaining a carrier-ops capability Just In Case would be a nice bonus. I'm thinking keep the beefed-up naval gear, structure and tailhook... partially to save the cost of the de-navalizing redesign. LOL Jagdviggen-style gun might work... are we thinking an Aden or 25mm, or do we do a Pave Claw going for a "poor man's Avenger"?
As for Hellfire/Brimstone (since IIRC they use a common rail and basic body): maybe two four-packs per station, hung on non-canted Vertical Engagement Racks like a modified BRU-55? That'd be 48 on six wing stations, plus if we add Mudhen-style stubs or long pylons under the engines whatever could fit there. (Though those would probably be limited to dual-rails by ground-clearance in Rotate, maybe three pairs in a row each side on a long pylon, plus a single each on any stubs.) Or could an adapter beam like the HSAB's on BUFFs extend that to two paired-quads per wing station? That'd be like a one-pass brigade-killer... O.O Let's see, a bone-stock Navy model packs 18K# combined on five stations, so that makes a 3600# limit on those averaged, maybe 1800# on the added outboards... if we up-engine we can probably get away with a little more.
J52-P-409 (highest power J52, for EA-6B ADVCAP): 12k#, 118"OAL, 38" dia, 2318# dry weight. We're looking for similar size, with more power on same weight or less weight and at least equal power--either way, we're looking for a noticeable boost in power-to-weight ratio.
Re my prior... or was it Ching-Kuo that had the twin tip-rails?
Oh, BTW, all this on based on the VEP Prowler airframe for its aerodynamic improvements?
And another random thought... assuming a beefed-up structure, keep the wingtip speedbrakes but bring back the fuse-mounted ones with differential operation to enhance maneuverability or assist with thrust vectoring? (Thinking, pop the brake on only one side and you might get a quick 180... you'd need a system to automatically pop the other through a quick extend/retract cycle to prevent spins though.)