the dinan tune is amazing - i had it on my car and its going to be on my new car as well (which ill have next week).
you can certainly add a DCI, DP, and FMIC without any issues.
I plan on adding an intake and possibly a FMIC in the future.
hope this helps
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2013 135i Coupe / LMB on Oyster / 6 Speed / BMWP Front Bumper, Side Skirts, Suspension, Electonic Steering Wheel V2, and CF Rear Spoiler / Jb4 G5 ISO / BMS Intake / ActiveAutowerke Downpipe, Axleback, Intercooler, Strut Bar / BMS CDV Mod / F30 Performance Shift Knob/E-Brake Handle + Bimmian Alcentara Boots / MS8 + JL600/6 + JX500/1 Powering a JL 10w3 in Custom Trunk Box