Hmm... I guess than I will return the RCA cable and get shorter versions instead. And yeah, my Amp and Pre-Pro will be quite close to each other.
Can you suggest a particular cable (With link if possible

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Very easy, just check Monoprice cables for 1 meter RCA (or even 1/2 meter if your two components are very close like you are suggesting) and check the specs for double shielding. Monoprice cables are the best place to shop for very good and affordable cables of any type for your components and speakers.
Also, Blue Jeans cables is another good place to check.
And for other good different brands, look at AudioQuest cables, UltraLink cables or Kimber Kable (TONIK, Cadence, TIMBRE, HERO...). The Kimber Kable TONIK interconnects are the most affordable and you can get the XLR type connectors.
But Kimber Kable is more money than the other brands mentioned here.
All these brands have also excellent interconnects at all price points, but you only need 3 very short ones with double shielding, so, they have some very affordable ones. Just get two pairs, if they don't come singles, and you'll have an extra one anyway. I use these three brands in my own setup. I also like WireWorld cables.
Links are easy, just Google the names mentioned. Any of these are all good, and if you spend roughly $40 for a pair, you can rest assure that they will be very good. And also look for discount for even more savings.
If I was you, I'll get some at Monoprice cables (double shielding) for the most affordable ones. Just get two pairs of 1/2 meter (or 1 meter) if your two components are very close of each other. RCA or XLR, it don't really matter.
Bob