Need help with stitch count for a baby blanket i'm making please

[Purlymomma]

Hi everyone!

I just registered today here, although I have used this website as reference many times....

Would someone advise me as to the number of stitches to cast on for a baby blanket I want to make:
First, I dont have a pattern for the actual blanket.. I have a Vine lace knit pattern, that calls for multiples of 9 plus 4.

Here is the lace design pattern:

Rows 1 and 3: Purl

Row 2: K3 *yo, k2, ssk, k2tog, k2, yo, k1 Rep from * across, end k1

Row 4: K2, *yo, k2, ssk, k2tog, k2, yo, k1 Rep from * across, end k2

So, Could I c/o say 130 stitches ( 9x14 = 126 plus 4 equals 130) ?
I tried this already and I was not ending with either k1 or k2. It was uneven...

I am thinking somewhere around 40-50 inches wide, bor a baby blanket..