Bass Pro is getting ready to put the 94sv CHIRP on sale for their spring classic, so I am thinking about upgrading my 73sv that is a pre-CHIRP model. I fish lakes only and rarely see depths over 25-35 feet. Since this model is a coastal model, am I gonna have any unforeseen issue with accuracy if I'm fishing typical lake situations of 5-15 feet for bass and crappie? Also, it comes with the Lakevu map card and pre-loaded with bluechart g2. Is that going to cause me any issues that I may not be thinking of?