The galvanic numbers for stainless is 0.5V and aluminium 0.95V. Aluslip will simply aggravate the problem as it improves the conductivity between the same pair of dissimilar metals.
Copper between aluminium and stainless messes up the battery effect or considerably slows it down.
Zinc is further up the sale from aluminium so will corrode first. All fine as it's a sacrificial layer. However when the micro thin zinc layer has gone (as it always does into aluminium) the steel will rust. It wont be galvanic as the values are near enough the same as aluminium, but rusted steel bolts will shear off and cause problems if left long enough.
My personal experience with stainless into aluminium is - do it dry (even with threadlock) and it will seize especially if the threads are open at the back (GSA side case clamps are a great example). Use a high solids content copper grease (Rocol or similar) and all is ok. Alloy wheels on a Japanese bike had 50% of the disc bolts shear off. They were all zinc plated high carbon with threads open at the back. Stainless with copper paste were all fine after 2 winters with no signs of corrosion.
I've never had a properly protected stainless bolt fail into aluminium, but dry they will seize every time. Make sure the paste goes all the way from top to bottom. Don't just cover the threaded bit.
Stainless yields at about the same level as a normal 8.8 bolt but it's tough so takes a heck of a lot more to shear it off. High tensile steels are much stronger but the parent aluminium hub has minimal tensile strength so the high tensile bolts are overkill. Then add the rate that zinc gets eroded away and pretty soon you can have a rusty bolt holding the disc. High carbon steels rust PDQ so need protection.
From
http://www.corrosion-doctors.org/Definitions/galvanic-series.htm
Metallurgy Index (Volt)
Gold, solid and plated & Gold-platinum alloy (0.00)
Rhodium plated on silver-plated copper (0.05)
Silver, solid or plated; monel metal & High nickel-copper alloys (0.15)
Nickel, solid or plated, titanium and alloys & Monel (0.30)
Copper, solid or plated; low brasses or bronzes; silver solder & German silvery high copper-nickel alloys; nickel-chromium alloys (0.35)
Brass and bronzes (0.40)
High brasses and bronzes (0.45)
18% chromium type corrosion-resistant steels (0.50)
Chromium plated; tin plated; 12% chromium type corrosion-resistant steels (0.60)
Tin-plate; tin-lead solder (0.65)
Lead, solid or plated; high lead alloys (0.70)
Aluminum, wrought alloys of the 2000 Series (0.75)
Iron, wrought, gray or malleable, plain carbon and low alloy steels (0.85)
Aluminum, wrought alloys other than 2000 Series aluminum, cast alloys of the silicon type (0.90)
Aluminum, cast alloys other than silicon type, cadmium, plated and chromate (0.95)
Hot-dip-zinc plate; galvanized steel (1.20)
Zinc, wrought; zinc-base die-casting alloys; zinc plated (1.25)
Magnesium & magnesium-base alloys, cast or wrought (1.75)
Beryllium (1.85)
