Hi VR-4 pros!

I need an advice, where to fit my MBC. Does it matter, how lond the vacuum lines become?

I have got myself a Forge Unos manual boost controller (ball&spring type). The plan is to fit it on the engine bay wall, next to the resistor pack for the injectors. I need to put it between the intake ellbow and OEM boost solenoid. When installing the MBC on the fire wall behind the engine, I need to use longer vacuum pipes (from intake ellbow to MBC and from MBC to OEM boost solenoid).

Will there be any effect on boost build up or boost response of the solenoid?
Would it be better to keep vacuum lines short or doesn't it matter at all how long they are?

Any info is highly appreciated. I'd rather look for another place to put the MBC, as having troubles after intsallation.