Max, almost everyone (short or tall) replaces the risers (not the bars) for shoulder comfort. OE risers are 3 1/8", and you want 4." The one inch riser spacer O2S referred to give the same movement, and are cheaper, but are hard to find (for one inch bars). The added rise and pullback equal pain free shoulders. Just so you know, the Interstate bars are a quarter inch narrower than the other Valks, but this makes no difference to taller risers.
Also, the 4" risers (for metrics) are plug and play, no changes necessary to wires or cables (though you always want to bench test the throttle cables at rest from lock to lock, just to make sure0. And you may want to turn the plastic wire guides on the back of the bars around 180*.
I used these.
https://www.aeromachmfg.com/RISER_SET_4_VTX_Retro_1300_p/am-4120c.htmThey are only listed for VTX, but I think they left Valk off the website just because it's an old bike (call and check). You can get cheaper, but not stronger. (out of stock... hmmm)
The other place to check for strong risers is SCOOTWORKS.
DO NOT forget to pad the tank when the riser bolts are loosened.