Throwing Darts at a Moving Target

I lack confident in my seed starting schedule this year.  Firstly, we are currently buried under five feet of snow and expecting another foot tonight into tomorrow. Secondly, there are conflicting seed starting dates for the vegetables, herbs and flowers that I want to grow. I generally rely on the seed packet for guidance, but it often differs from the online resources. In addition, I lack confidence in determining a start date for spring planting in the hoophouse. I want to better utilize the hoophouse for early spring greens and peas. Oh well, this is my best effort, but I feel like I am throwing darts at a moving target.

                                                   Seeds to be sowed 12 weeks (w/o February 16) before the last frost:

Asparagus

White onions
Red Onions

Leeks

Verbena

Vinca
Hibiscus
Lobelia 

Impatiens

Celery

                                                  Seeds to be sowed 11 weeks (w/o February 23) before the last frost:

Snapdragons

Black-Eyed Susan
Foxglove

Echinacaea
Grecian Rose
Chamomile
Coreopsis
Gypsophilia

          Seeds to be sowed 10 weeks (w/o March 2) before the last frost:

Petunia

Potentilla
Coleus
Lupine

Seeds to be sowed 9 weeks (w/o March 9) before the last frost:
Independence Day Tomato (for hoophouse)
Peas, Super Sugar (for hoophouse)
Lemongrass
Rock Soapwort
Columbine, Tequila Sunrise
Ageratum, Dondo Blue
Hollyhocks, Nigra
Chinese Forget-Me-Nots
Alyssum, Basket of Gold
Artichoke
Lettuce

Arugula

Spinach

Kale, Blue Vates (for hoophouse)
Kale, Winterbor (for hoophouse)
Broccoli (for hoophouse)
Thyme

Seeds to be sowed 8 weeks (w/o March 16) before the last frost:
Lemon Balm
Portulaca
Eggplant
Evergreen Bunching Onions
Alyssum, annual

Seeds to be sowed 7 weeks (w/o March 23) before the last frost:
Peppers
Brussel Sprouts
Cauliflower
Cabbage

Seeds to be sowed 6 weeks (w/o March 30) before the last frost:

Tomatoes
Dahlia

Seeds to be sowed  4-5 weeks (w/o April 6, 13, 20 or 27) before the last frost:
Alliums - since crop failure
Naturtiums
Zinnias
Shasta Daisy
Calendula
Cleome

Postscript #1 -  Nineteen geranium seedlings have germinated; three cells show no sign of germination.