Help removing the is numeric null value from code

I have the following code I am trying to remove the limiter that blocks the file from reporting if alpha but I need the code to still skip the first 3 rows of my excel form and NOT output the data from the first three rows to the .txt file. Is this possible?

Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)

    Const DELIMITER As String = "|"
    
    Dim varCol As Variant
    Dim strOutput As String
    Dim strTemp As String
    Dim i As Long
    
    For i = 1 To Cells(Rows.Count, "A").End(xlUp).Row
        If IsNumeric(Cells(i, "A").Value) And Len(Cells(i, "A").Value) > 0 Then
            strTemp = vbNullString
            For Each varCol In Array("A", "C", "E", "L", "Q", "S", "X", "Z", "AC", "AE", "AG")
                Select Case (InStr(Cells(i, varCol).Text, "|") > 0)
                    Case True:  strTemp = strTemp & DELIMITER & """" & Cells(i, varCol).Text & """"
                    Case Else:  strTemp = strTemp & DELIMITER & Cells(i, varCol).Text
                End Select
            Next varCol
            strTemp = Mid(strTemp, Len(DELIMITER) + 1)
            If Len(strOutput) = 0 Then strOutput = strTemp Else strOutput = strOutput & vbCrLf & strTemp
        End If
    Next i
    
    If Len(strOutput) > 0 Then
        Close #1
        Open "\\mdappc02\mtstats\STAGED\10_EOM\EOMStats.txt" For Output As #1
        Print #1, strOutput
        Close #1
    End If

End Sub