DRoberts - I think you should think about the ftp option to send csv files up to a web host running your weather website given the jetpac and its less than robust performance. That would give your weather data a presence and home with personality you and your family and friends around the world can visit as apposed to sending your data to corporate partners such as WU, WFY, PWS, etc. and government agencies only.
First you should set the jetpack in tethered mode using the usb cable, this gives you faster access to the cell side of the device for the computer connected. Windows will accept this as a network connection and all the normal features of a network connection will be activated. The wifi on the jetpack will continue to work for your phone and other devices. This connection also trickle charges the device battery so every month take a day and disconnect and drain the battery so it fully charges. To make this connection the first time you connect the device via the usb, open a browser on that computer and point to the ip address on the device, using the also provided login id and password then select tethered mode from the web menu. Some models also allow you to make this change from the jetpack device menu.
Hardware
On your Davis console buy a "data logger" of your choice as stated above. I'm not sure of the wifi unit being beta tested by a few folks, and marketed and developed by a member here works in USA. If you go wifi make sure you can make a data connection to it using cable or using wifi. Davis makes one that is usb based, and is easy to use. Ethernet aka IP loggers will not work for you if you have a jetpack. The majority of weather station software packages out there for davis stations will allow you to upload direct to many corporate weather sites and the government in both USA and Canada.
Software
You will need two packages, one being a web host to host the website you create. And the other local at your Davis location. Weather Display, Cumulus, and VWS are popular. All three can download data from your Davis console to your website using FTP built in. If you go with a software that does not include internal FTP clients, you can download secure clients such as filezilla.
For the website, look for a host that can run php and javascript based scripts and can accept your ftd uploads of observations.
Look and feel? I just switched my site from VWS based templates to use Ken's Saratoga-Weather templates. But other weather station software can deliver website templates for your display. It's a personal choice.
Whatever software you use at the station location the computer needs to be left on 24/7 or you can drop off live update sites as no report.
Don't let your jetpack defeat your hopes. You can make it work.