Just putting my $.02 in here:
Vent covers=worth every penny...hands down...end of story. I leave the vents open any time and the entire time my 5er is in storage. Helps keep it ventilated and aired out.
LED Lights=also worth every penny. I found the following vendor from a user on a forum and bought a set. All I can say is wow. The link is the warm white ones. I put the bright white ones in our lights in the bedroom and its almost like a stadium at night. Don't get me wrong I like it but it is bright. In fact the first day when I installed them my wife went to the bedroom after dark and actually screamed a bit when she first turned on the lights cause the startled her being so bright...lol. Price isn't bad either....replace 10 bulbs for $16 something. here is the link:
Ebay LED Warm Lights